16626673320913 has 2 divisors, whose sum is σ = 16626673320914. Its totient is φ = 16626673320912.

The previous prime is 16626673320871. The next prime is 16626673320941. The reversal of 16626673320913 is 31902337662661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14380955281729 + 2245718039184 = 3792223^2 + 1498572^2 .

It is an emirp because it is prime and its reverse (31902337662661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16626673320913 is a prime.

It is not a weakly prime, because it can be changed into another prime (16626673420913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8313336660456 + 8313336660457.

It is an arithmetic number, because the mean of its divisors is an integer number (8313336660457).

Almost surely, 2^{16626673320913} is an apocalyptic number.

It is an amenable number.

16626673320913 is a deficient number, since it is larger than the sum of its proper divisors (1).

16626673320913 is an equidigital number, since it uses as much as digits as its factorization.

16626673320913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8817984, while the sum is 55.

The spelling of 16626673320913 in words is "sixteen trillion, six hundred twenty-six billion, six hundred seventy-three million, three hundred twenty thousand, nine hundred thirteen".